Re: usb speed under windows CE 6.0

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance


"only_lonely" <onlylonely@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:7327624F-BF0A-4154-AF09-9E6DE7C34E72@xxxxxxxxxxxxxxxx
How do we check the usb speed under windows CE 6.0?
i want to verify if the usb port can perform at 2.0 and 1.1 high and full
speed.
i got a usb port which design for 2.0 , and also work at 1.1 speed,stated at
the spec.

Read the USB device descriptor and look at the bcdUSB field. You can do this when a device is attached.

e.g.
LPCUSB_DEVICE lpUsbDev = (lpUsbFuncs->lpGetDeviceInfo)( hUSB );
if (!lpUsbDev)
{
goto broken;
}
lpUsbDev->Descriptor.bcdDevice contains the USB version supported for the device.

Geoff
--

.

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